“That’s ignorance,” said Javier Romero, 29, as he bought a Gatorade in the store at E. 65th St. and Second Ave. “That’s just the way he is, ignorant.”

Fellow shopper Victor Destacio, 40, of Woodside, Queens, was stunned to hear any presidential candidate — much less one born and raised in the city — mixed up the Al Qaeda attack with the open-all-night convenience store.

“That’s not acceptable, to make that kind of mistake,” Destacio said Tuesday. “You’re running for president, and you don’t know the difference between 9/11 and 7-Eleven? 9/11 is nothing to joke around with.”

Bill Mack, from Orange County, and his daughter Bella discuss Trump’s recent flub outside a 7-Eleven in Midtown Tuesday.

“For him to say something like that, even as a mistake, is just mocking everything that happened,” said Corey Ebanks, 28, of Bedford-Stuvesant. “It’s a stupid thing to say as someone running for president, and shows his level of intellect.”

Matt Flaherty, 46, of Queens, felt the same way: “I don’t think he knows the difference.”